整合資產提供功能 (Unity)

public void ConfigureAssetPacks {    // Creates an AssetPackConfig with a single asset pack, named    // examplePackName, containing all the files in path/to/exampleFolder.    var assetPackConfig = new AssetPackConfig();    assetPackConfig.AddAssetsFolder("examplePackName",                                    "path/to/exampleFolder",                                    AssetPackDeliveryMode.OnDemand);     // Configures the build system to use the newly created assetPackConfig when    // calling Google > Build and Run or Google > Build Android App Bundle.    AssetPackConfigSerializer.SaveConfig(assetPackConfig);     // Alternatively, use BundleTool.BuildBundle to build an App Bundle from script.    BuildBundle(new buildPlayerOptions(), assetPackConfig); }

using Google.Play.AssetDelivery;  // Loads the AssetBundle from disk, downloading the asset pack containing it if necessary. PlayAssetBundleRequest bundleRequest = PlayAssetDelivery.RetrieveAssetBundleAsync(asset-bundle-name);

AssetBundle assetBundle = bundleRequest.AssetBundle;  // You may choose to load scenes from the AssetBundle. For example: string[] scenePaths = assetBundle.GetAllScenePaths(); SceneManager.LoadScene(scenePaths[path-index]);

// Download progress of request, between 0.0f and 1.0f. The value will always be // 1.0 for assets delivered as install-time. // NOTE: A value of 1.0 will only signify the download is complete. It will still need to be loaded. float progress = bundleRequest.DownloadProgress;  // Returns true if: //   * it had either completed the download, installing, and loading of the AssetBundle, //   * OR if it has encountered an error. bool done = bundleRequest.IsDone;  // Returns status of retrieval request. AssetDeliveryStatus status = bundleRequest.Status; switch(status) {     case AssetDeliveryStatus.Pending:         // Asset pack download is pending - N/A for install-time assets.     case AssetDeliveryStatus.Retrieving:         // Asset pack is being downloaded and transferred to app storage.         // N/A for install-time assets.     case AssetDeliveryStatus.Available:         // Asset pack is downloaded on disk but NOT loaded into memory.         // For PlayAssetPackRequest(), this indicates that the request is complete.     case AssetDeliveryStatus.Loading:         // Asset pack is being loaded.     case AssetDeliveryStatus.Loaded:         // Asset pack has finished loading, assets can now be loaded.         // For PlayAssetBundleRequest(), this indicates that the request is complete.     case AssetDeliveryStatus.Failed:         // Asset pack retrieval has failed.     case AssetDeliveryStatus.WaitingForWifi:         // Asset pack retrieval paused until either the device connects via Wi-Fi,         // or the user accepts the PlayAssetDelivery.ShowConfirmationDialog dialog.     case AssetDeliveryStatus.RequiresUserConfirmation:         // Asset pack retrieval paused until the user accepts the         // PlayAssetDelivery.ShowConfirmationDialog dialog.     default:         break; }

if(request.Status == AssetDeliveryStatus.RequiresUserConfirmation    || request.Status == AssetDeliveryStatus.WaitingForWifi) {     var userConfirmationOperation = PlayAssetDelivery.ShowConfirmationDialog();     yield return userConfirmationOperation;      switch(userConfirmationOperation.GetResult()) {         case ConfirmationDialogResult.Unknown:             // userConfirmationOperation finished with an error. Something went             // wrong when displaying the prompt to the user, and they weren't             // able to interact with the dialog.         case ConfirmationDialogResult.Accepted:             // User accepted the confirmation dialog--an update will start.         case ConfirmationDialogResult.Declined:             // User canceled or declined the dialog. It can be shown again.         default:             break;     } }

// Will only attempt if the status is Pending, Retrieving, or Available - otherwise // it will be a no-op. bundleRequest.AttemptCancel();  // Check to see if the request was successful by checking if the error code is Canceled. if(bundleRequest.Error == AssetDeliveryErrorCode.Canceled) {     // Request was successfully canceled. }

private IEnumerator LoadAssetBundleCoroutine(string assetBundleName) {      PlayAssetBundleRequest bundleRequest =         PlayAssetDelivery.RetrieveAssetBundleAsync(assetBundleName);      while (!bundleRequest.IsDone) {         if(bundleRequest.Status == AssetDeliveryStatus.WaitingForWifi) {             var userConfirmationOperation = PlayAssetDelivery.ShowCellularDataConfirmation();              // Wait for confirmation dialog action.             yield return userConfirmationOperation;              if((userConfirmationOperation.Error != AssetDeliveryErrorCode.NoError) ||                (userConfirmationOperation.GetResult() != ConfirmationDialogResult.Accepted)) {                 // The user did not accept the confirmation. Handle as needed.             }              // Wait for Wi-Fi connection OR confirmation dialog acceptance before moving on.             yield return new WaitUntil(() => bundleRequest.Status != AssetDeliveryStatus.WaitingForWifi);         }          // Use bundleRequest.DownloadProgress to track download progress.         // Use bundleRequest.Status to track the status of request.          yield return null;     }      if (bundleRequest.Error != AssetDeliveryErrorCode.NoError) {         // There was an error retrieving the bundle. For error codes NetworkError         // and InsufficientStorage, you may prompt the user to check their         // connection settings or check their storage space, respectively, then         // try again.         yield return null;     }      // Request was successful. Retrieve AssetBundle from request.AssetBundle.     AssetBundle assetBundle = bundleRequest.AssetBundle;

public IEnumerator GetDownloadSize() {    PlayAsyncOperation<long> getSizeOperation =    PlayAssetDelivery.GetDownloadSize(assetPackName);     yield return getSizeOperation;    if(operation.Error != AssetDeliveryErrorCode.NoError) {        // Error while retrieving download size.     } else {         // Download size is given in bytes.         long downloadSize = operation.GetResult();     } }

PlayAsyncOperation<string> removeOperation = PlayAssetDelivery.RemoveAssetPack(assetBundleName);  removeOperation.Completed += (operation) =>             {                 if(operation.Error != AssetDeliveryErrorCode.NoError) {                     // Error while attempting to remove AssetBundles.                 } else {                     // Files were deleted OR files did not exist to begin with.                 }             };